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[文献書誌] TADAUCHI, Osamu: "Taxon-based entomology database KONCHU on INTERNET and its usage."ESAKIA. 39. 53-62 (1999)
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[文献書誌] TADAUCHI, Osamu: "Subgeneric positions and redescriptions of Cockerell's Siberian Andrena preserved in the British Museum(Natural History)(Hymenoptera, Andrenidae)."ESAKIA. No.39. 13-30 (1999)
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[文献書誌] XU,H.-1.: "A revision of the subgenus Tarsandrena of the genus Andrena of eastern Asia(Hymenoptera, Andrenidae)."ESAKIA. No.39. 31-46 (1999)
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[文献書誌] TADAUCHI, Osamu: "A new species of the genus Epeolus from Japan(Hymenoptera, Anthoporidae)."ESAKIA. No.39. 47-51 (1999)
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[文献書誌] TADAUCHI, Osamu: "Species information database KONCHU on Japanese, East Asian and Pacific insects on INTERNET."Proceedsings of the International Joint Workshop for Studies on BIODIVERSITY. 45 (1999)
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[文献書誌] 多田内、修: "日本のハナバチ相"昆虫と自然. 35(3). 2-3 (1999)